THE DEFINITIVE GUIDES TO THE X WINDOW SYSTEM VOLUME SIX B Motif Reference Manual for OpenMotif 2.3 Open Source Edition Based upon the manual writted by Antony Fountain and Paula Ferguson, O’Reilly and Associates Updated and Published by Peter Winston and the Technical Staff of Integrated Computer Solutions, Inc. Motif Reference Manual, Open Source Edition for OpenMotif version 2.3 Copyright ©2005 by Integrated Computer Solutions, Inc. This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). December 2001 Copyright ©1993, 2000, 2001 by O’Reilly & Associates, Inc. and Antony Fountain. This material may be distributed only subject to the terms and conditions set forth in the Open Publication License, v1.0 or later (the latest version is presently available at http://www.opencontent.org/openpub/). This is an updated version of the Motif Reference Manual, Open Source Edition for Motif 2.1, published by Imperial Software Technology in December 2001. The source files for this version of the document are available at http://www.motifzone.org. The source files for the Open Source Edition can be found at http://www.ist.co.uk/motif/motif_refs.html. A description of the modifications is contained in the Preface to the Open Source Edition. The Open Source Edition is a modified version of the Motif Reference Manual, Second Edition, published by O’Reilly & Associates in February 2000. The source files for the Second Edition can be found at http://www.oreilly.com/openbook/motif/. A description of the modifications is contained in the Preface to the Third Edition, which has become the Open Source Edition. Many of the designations used by manufacturers and sellers to distinguish their products are claimed as trademarks. Where those designations appear in this book, and O’Reilly & Associates, Inc. was aware of a trademark claim, the designations have been printed in caps or initial caps. While every precaution has been taken in the preparation of this book, the publisher assumes no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. Published by: Integrated Computer Solutions, Inc. 54B Middlesex Turnpike Bedford, MA 01730 Tel.:617.621.0060 Fax:617.621.9555 email:[email protected] URL:http://www.ics.com Contents Visual Widget Index . vii Preface . xv Section 1 - Motif Functions and Macros . 1 Section 2 - Motif and Xt Widget Classes . 599 Section 3 - Mrm Functions . 1065 Section 4 - Mrm Clients . 1103 Section 5 - UIL File Format . 1137 Section 6 - UIL Data Types . 1157 Section 7 - UIL Functions . 1219 Appendix A - Function Summaries . 1231 Appendix B - Data Types . 1269 Appendix C - Table of Motif Resources . 1309 Appendix D Table of UIL Objects . 1345 Appendix E - New Features in Motif 2.0 and 2.1 . 1355 Appendix F-New Features in Motif 2.2 . 1363 Appendix G: New Features in Motif 2.3 . 1365 Index . 1371 Motif Reference Manual v Contents Motif Reference Manual vi Visual Widget Index Visual Widget Index This section serves as a graphical widget index to allow users to quickly find the reference pages they are searching for. Reference Guide Widget Icon Widget Name Page Number XmArrowButton 656 XmColumn 688 XmComboBox 692 Motif Reference Manual vii Visual Widget Index Reference Guide Widget Icon Widget Name Page Number XmCommand 702 XmDataField 727 XmFileSelectionBox 777 Motif Reference Manual viii Visual Widget Index Reference Guide Widget Icon Widget Name Page Number XmFrame 799 XmLabel 829 XmList 838 XmMainWindow 855 Motif Reference Manual ix Visual Widget Index Reference Guide Widget Icon Widget Name Page Number XmMessageBox 873 XmNotebook 886 XmOutline 897 XmPanedWindow 900 XmPushButton 921 Motif Reference Manual x Visual Widget Index Reference Guide Widget Icon Widget Name Page Number XmScale 953 XmScrollBar 967 XmScrolledWindow 979 XmSelectionBox 985 Motif Reference Manual xi Visual Widget Index Reference Guide Widget Icon Widget Name Page Number XmSeparator 994 XmSimpleSpinBox 999 XmSpinBox 1004 XmTabStack 1014 XmText 1021 Motif Reference Manual xii Visual Widget Index Reference Guide Widget Icon Widget Name Page Number XmTextField 1040 XmToggleButton 1045 XmTree 1058 Motif Reference Manual xiii Visual Widget Index Motif Reference Manual xiv Preface Preface to the Open Source Edition version 2.3 From its inception, Motif was destined to become a tremendous success. When the Open Software Foundation delivered the first version of Motif, it was adopted by almost all major users and system vendors, and became the de facto standard in user interface development for UNIXTM applications. Motif’s initial phase of development was also accelerated through competition with Open Look. After the battle with Open Look was won, Motif went into its second phase of evolution. Though ubiquitous in the UNIX community, Motif development and enhancement stagnated for many years while desktop applications migrated to the Web, Windows, and to a lesser extent, Linux. Now Motif is entering a third phase, an exciting growth phase, where it is being enhanced by an active Open Source community. This is the first new major edition in over four years (since the 2.1.30 release). This version of Motif adds support for modern images, fonts, as well as ads new widgets. But this is only the beginning. Going forward, the OpenMotif project team is already putting plans in place and organizing broad community support to modernize the “look and feel” of Motif, integrate it with current desktops, and make Motif applications accessible to all. If you would like to join the OpenMotif project team, please visit the OpenMotif homepage at: http://www.openmotif.org or the Motif Zone at http://www.motifzone.org. In this release of the Open Motif Reference Guide 6b, the documentation has been updated to reflect the changes in Motif since Motif 2.1. • Appendix F lists the changes from Motif 2.1 to OpenMotif 2.2 • Appendix G lists the changes from OpenMotif 2.2 to OpenMotif 2.3, as well as explains some of the new features. • A visual widget index has been added to help identify Motif widgets more quickly. • The status of some widgets has changed and some new Motif capabilities have been added. For more information on this, please see the OpenMotif 2.3 Release Notes. These changes are our own and are not the responsibility of, or endorsed by, the authors of the previous version. This document does not assert or imply endorsement of this modified book by its original authors or publisher. Peter Winston Motif Reference Manual xv Preface Preface to the Open Source Edition Many thanks to all at O’Reilly and Associates for releasing this, Volume 6B, and the companion Volume 6A, the Motif Programming Manual, in open source. Both have been extensively revised for Motif 2.1; this, the Motif Reference Manual, has had several alterations to the 2nd edition as printed: • all the function prototypes and examples have been converted to strict ANSI format • the UIL sections have been restored • the Xt Session Shell is documented • many bug patches have been folded in • new examples have been added to Motif 2.1 procedure sections • the book sources have been converted from the original troff into FrameMaker and PDF for- mats Removing the UIL portions from the original printed second edition was a hard decision; the Motif 2.1 toolkit was a much expanded library since previous versions of the book, and something had to give - the book was over a thousand pages as it was. However, an electronic copy does not have the same space restrictions as the printed tome, and so these materials, originally in the Motif 1.2 version of the manual, have been restored. They also have been reworked for Motif 2.1. Antony J. Fountain Preface to the Second Edition What to put in, and what to leave out, of this update to the Motif Reference Manual was the hardest decision of all. The guiding principle has been to consider for whom this material is intended. This is a Programmer’s Reference, and not a Widget Author’s handbook. Accordingly, those aspects of the new Trait mechanisms which an application programmer needs to know have been included, but the Xme utilities have not. Specifying a Trait as a well-defined piece of behaviour which a widget supports, it is enough to know which traits a Widget Class supports, and how this affects objects in the widget instance hierarchy. How a Trait is implemented, and which methods are associated with the given Trait, are generally the domain of the widget author. Hence it is recorded that the VendorShell holds the XmQTspecifyRenderTableTrait, and that this means that widget classes further down the widget instance hierarchy inherit default Render Table information from the VendorShell. This is all that the Application Programmer needs to know: the rest is silence. Conversely, the Motif Input Method utilities have been included. Although mostly defined originally in the Motif 1.2 release, and although the Motif widget classes generally handle connections to an Input Method when and where this is required, there is an important exception. The Motif Drawing Area does not register itself with an Input Method automatically, and hence xvi Motif Reference Manual Preface anyone who needs to directly implement internationalized input for this widget class most certainly would need to know about the XmIm functions. The World does not all speak English: for these reasons, the XmIm functions are included in the Manual. A brief note concerning the status of Motif as the premier Unix toolkit. A number of alternative toolkits have arisen, particularly in the Linux domain, which offer an X-based windowing system for the Unix, and other, platforms.
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